/*
 * Copyright 2003-2005 the original author or authors.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */
package com.jdon.jivejdon.infrastructure.repository.dao;

import com.jdon.controller.model.PageIterator;
import com.jdon.jivejdon.domain.model.Forum;

/**
 * @author <a href="mailto:banq@163.com">banq</a>
 * 
 */
public interface ForumDao {

	Forum getForum(Long id);

	void createForum(Forum forum);

	void updateForum(Forum forum);

	void deleteForum(Forum forum);

	PageIterator getForums(int start, int count);

	public int getMessageCount(Long forumId);

	/**
	 * get the thread count from thread db.
	 * 
	 * @param forumId
	 * @return
	 */
	public int getThreadCount(Long forumId);

	/**
	 * get laste message from the message db
	 * 
	 */
	public Long getLatestPostMessageId(Long forumId);

	void clearCache();

}
